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section: Gnits to care about -------------------

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section:
Gnits to care about
-------------------

-timj
This commit is contained in:
Tim Janik 1998-02-05 00:13:42 +00:00
parent 4b86717650
commit f82814760e
1 changed files with 18 additions and 0 deletions
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docs/refcounting.txt
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@ -294,6 +294,24 @@ void gtk_menu_item_remove_submenu (GtkMenuItem *menu_item);
void gtk_option_menu_remove_menu (GtkOptionMenu *option_menu);
Gnits to care about
-------------------
On another note, though somewhat unrelated, the notification nature
of the signal mechanism might cause events to be emitted that have their
GdkWindow pointer set to NULL. This is due to the fact that certain
events need to be emitted after the real GdkWindow of a widget is not
any longer pertinent. It's up to the application to check for the window
field of the event structure to be != NULL, if it is going to perform
any operations through Gdk calls on it.
Events that a likely to trigger a missing check for the window pointer
currently are (and correspond to the trailing signals):
GDK_SELECTION_CLEAR GtkWidget::selection_clear_event
GDK_EXPOSE GtkWidget::expose_event
GDK_FOCUS_CHANGE GtkWidget::focus_in_event
GtkWidget::focus_out_event
Initial proposal: